Wind turbine generator cabin hub combined hoisting device with adjustable gravity center

Abstract

The utility model discloses a wind turbine generator cabin hub combined hoisting device with an adjustable gravity center, which is characterized by comprising a main longitudinal beam, hydraulic rods, pin shaft components, a tilt angle sensor, a balance beam, a lifting lug, a cross beam, a hoisting belt and a shackle component, and the two ends of the main longitudinal beam are hinged with one ends of the two hydraulic rods through the pin shaft components; the ends, away from the main longitudinal beam, of the two hydraulic rods are hinged to the balance beam, the two hydraulic rods are arranged in a splayed shape, a lifting lug is arranged on the front side of the bottom of the main longitudinal beam, a cross beam is fixedly arranged on the side, away from the lifting lug, of the main longitudinal beam, a lifting belt is arranged on the lifting lug and connected with a fan hub through the lifting belt, and a lifting belt is arranged on the cross beam and connected with a cabin through the lifting belt. The lifting point position can be automatically adjusted through stretching and retracting of the upper hydraulic lifting rod to adapt to changes of the gravity center position of a cabin and hub combination under different working conditions, combined lifting of a cabin and a hub of a wind turbine generator is achieved, the wind power lifting efficiency is improved, and the lifting risk of the wind turbine generator is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of wind turbine hoisting, in particular to a wind turbine nacelle hub combined hoisting device with adjustable center of gravity. Background Art

[0002] With the increasing power generation of wind turbines, especially the rapid development of offshore wind power technology, the nacelle-hub combined lifting scheme that can simplify the on-site lifting process has broad application prospects. The existing wind turbine nacelle lifting schemes on the market are all special lifting equipment, that is, they only lift nacelles of the same model and state. The nacelle has an accurate center of gravity position, a simple structure, and is easy to use, but the function is relatively single. Therefore, there is an urgent need for a wind turbine nacelle-hub combined lifting device with an adjustable center of gravity, which can realize the combined lifting of the nacelle and the hub under different working conditions by adjusting the lifting point position, thereby improving the on-site lifting efficiency. Utility Model Content

[0003] The utility model aims to provide a wind turbine nacelle hub assembly hoisting device with adjustable center of gravity to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine nacelle hub combined lifting device with adjustable center of gravity, comprising a main longitudinal beam, a hydraulic rod, a pin assembly, an inclination sensor, a balance beam, a lifting lug, a cross beam, a sling and a shackle assembly, wherein both ends of the main longitudinal beam are hinged to one end of two hydraulic rods through a pin assembly, and one end of the two hydraulic rods away from the main longitudinal beam is hinged to the balance beam, and the two hydraulic rods are arranged in an "eight" shape, a lifting lug is provided on the front side of the bottom of the main longitudinal beam, a cross beam is fixedly provided on one side of the main longitudinal beam away from the lifting lug, a sling is provided on the lifting lug and is connected to the wind turbine hub through the sling, and a sling is provided on the cross beam and is connected to the nacelle through the sling.

[0005] Preferably, two cross beams are provided and are symmetrically arranged on both sides of the main longitudinal beam, and the cross beams are arranged perpendicular to the main longitudinal beam.

[0006] Preferably, the sling is detachably connected to the crossbeam via a shackle assembly.

[0007] Preferably, the inclination sensor is arranged on the main longitudinal beam, and the inclination sensor is detachably connected to the main longitudinal beam by bolts.

[0008] Preferably, the balance beam is provided with hanging plates at the top and the bottom, the hanging plate at the top is provided with hanging holes for connection with the main hook of the crane, and the hanging plate at the bottom is hinged with the hydraulic rod by means of a pin shaft.

[0009] Preferably, the two hydraulic cylinders are located in the same plane.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the "eight"-shaped arrangement of the main longitudinal beam, hydraulic rod, inclination sensor, and hydraulic rod is more stable, reducing the swing amplitude of the nacelle hub during the hoisting process. By relying on the extension and retraction of the two hydraulic rods, the main hook position can be adjusted arbitrarily, so that the main hook is always above the center of gravity of the hoisted object. Combined with the data fed back by the inclination sensor, the hoisting posture is adjusted in real time, which can greatly improve the hoisting safety and efficiency. Compared with the traditional split hoisting, the combined hoisting method of the nacelle and the hub solves the problems of difficult docking of the nacelle hub and low assembly efficiency, and can meet the hoisting construction of nacelle hubs of different working conditions and different weights. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 This is a front view of the wind turbine nacelle hub assembly hoisting device with adjustable center of gravity in this embodiment;

[0013] Figure 2 This is a front view of the wind turbine nacelle hub being hoisted as a whole by the combined hoisting device for the nacelle hub of the wind turbine nacelle with adjustable gravity center in this embodiment;

[0014] Figure 3 It is a top view of the wind turbine nacelle hub being hoisted as a whole by the wind turbine nacelle hub assembly hoisting device with adjustable gravity center in this embodiment;

[0015] Figure 4 It is a schematic diagram of the center of gravity adjustment of the wind turbine nacelle hub assembly hoisting device with adjustable center of gravity in this embodiment.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1: Main longitudinal beam; 2: Hydraulic rod; 3: Pin assembly; 4: Inclination sensor; 5: Balance beam; 6: Lifting lug; 7: Cross beam; 8: Lifting strap; 9: Wheel hub; 10: Nacelle; 11: Shackle assembly; 12, Hanging plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 The utility model provides a technical solution: a wind turbine nacelle hub combined lifting device with adjustable center of gravity, comprising a main longitudinal beam 1, a hydraulic rod 2, a pin assembly 3, an inclination sensor 4, a balance beam 5, a lifting lug 6, a cross beam 7, a sling 8 and a shackle assembly 11, wherein both ends of the main longitudinal beam 1 are hinged to one end of two hydraulic rods 2 through the pin assembly 3, and one end of the two hydraulic rods 2 away from the main longitudinal beam 1 is hinged to the balance beam 5, and the two hydraulic rods 2 are arranged in an "eight" shape, a lifting lug 6 is provided on the front side of the bottom of the main longitudinal beam 1, a cross beam 7 is fixedly provided on one side of the main longitudinal beam 1 away from the lifting lug 6, a sling 8 is provided on the lifting lug 6 and is connected to a wind turbine hub 9 through the sling 8, and a sling 8 is provided on the cross beam 7 and is connected to a nacelle 10 through the sling 8.

[0020] Specifically, two cross beams 7 are provided and symmetrically arranged on both sides of the main longitudinal beam 1. The cross beams 7 are arranged perpendicular to the main longitudinal beam 1 to improve the stability of the nacelle hub assembly hoisting.

[0021] Specifically, the sling 8 and the crossbeam 7 are detachably connected via a shackle assembly 11, which is convenient for quick disassembly and assembly. It should be noted that the shackle assembly 11 can be selected as a quick-release hook commonly used in the art. The other end of the sling 8 passes through the skylight on the top of the cabin 10 and the hub 9 shell and is connected to the hanging point on the frame.

[0022] Specifically, the inclination sensor 4 is arranged on the main longitudinal beam 1, and the inclination sensor 4 is detachably connected to the main longitudinal beam 1 through bolts. The three-dimensional posture of the main longitudinal beam can be remotely monitored through the inclination sensor 4, so as to provide data support for solving the inclination angle ±θ to be compensated for the lifting of the nacelle hub assembly, so as to facilitate the on-site operator to adjust the center of gravity position of the hoist in time, ensure the stability of the lifting process, and adjust the telescopic length of the two hydraulic rods 2 to change the inclination of the main longitudinal beam 1. It is recommended to apply the "rough leveling first, then fine leveling" adjustment method. If the above +θ>5°, the hydraulic rod 2 on one side is extended, the hydraulic rod 2 on the other side is shortened, and the recommended speed is adopted on both sides to basically complete the leveling of the nacelle hub. Vice versa, if the above ±θ≤5°, only the hydraulic rod 2 on one side is extended and retracted, and the recommended speed is adopted to fine-tune the inclination of the nacelle hub assembly, so that the main hook is always above the center of gravity of the nacelle hub to ensure the balance of the hoisted object.

[0023] Specifically, hanging plates 12 are arranged on the top and bottom of the balance beam 5. The hanging plate 12 at the top is provided with a hanging hole for connecting with the main hook of the crane, and the hanging plate 12 at the bottom is hinged with the hydraulic rod 2 by a pin shaft.

[0024] Specifically, the two hydraulic cylinders 2 are located in the same plane to improve stability.

[0025] A specific application example of this embodiment is:

[0026] When the device is in use,

[0027] The first step is to pass the sling through the cabin and the hub shell skylight before lifting, and connect it to the lifting point on the frame with a shackle;

[0028] The second step is to connect the main hook of the crane to the top hanging plate 12 of the balance beam 5, and lift the lifting device as a whole to the top of the nacelle hub;

[0029] The third step is to connect the other end of the sling with the lifting lug 6 and the crossbeam 7 at the bottom of the lifting device using the shackle assembly 11, and slowly lift it.

[0030] The fourth step is to adjust the extension and retraction of the two hydraulic rods 2 according to the data fed back by the inclination sensor 4 during the lifting process so that the lifting device is always in a horizontal state.

[0031] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine nacelle hub assembly hoisting device with adjustable center of gravity, characterized in that: The invention comprises a main longitudinal beam (1), a hydraulic rod (2), a pin assembly (3), an inclination sensor (4), a balance beam (5), a lifting eye (6), a cross beam (7), a lifting belt (8) and a shackle assembly (11), wherein two ends of the main longitudinal beam (1) are hinged to one end of two hydraulic rods (2) through the pin assembly (3), one end of the two hydraulic rods (2) away from the main longitudinal beam (1) is hinged to the balance beam (5), and the two hydraulic rods (2) are arranged in an "eight" shape, a lifting eye (6) is provided on the front side of the bottom of the main longitudinal beam (1), a cross beam (7) is fixedly provided on the side of the main longitudinal beam (1) away from the lifting eye (6), a lifting belt (8) is provided on the lifting eye (6) and is connected to the fan hub (9) through the lifting belt (8), and a lifting belt (8) is provided on the cross beam (7) and is connected to the nacelle (10) through the lifting belt (8).

2. The wind turbine nacelle hub assembly hoisting device with adjustable center of gravity according to claim 1, characterized in that: Two cross beams (7) are provided and are symmetrically arranged on both sides of the main longitudinal beam (1); the cross beams (7) are arranged perpendicular to the main longitudinal beam (1).

3. The wind turbine nacelle hub assembly hoisting device with adjustable center of gravity according to claim 2, characterized in that: The sling (8) and the crossbeam (7) are detachably connected via a shackle assembly (11).

4. The wind turbine nacelle hub assembly hoisting device with adjustable center of gravity according to claim 1, characterized in that: The inclination sensor (4) is arranged on the main longitudinal beam (1), and the inclination sensor (4) is detachably connected to the main longitudinal beam (1) via bolts.

5. The wind turbine nacelle hub assembly hoisting device with adjustable center of gravity according to claim 1, characterized in that: The top and bottom of the balance beam (5) are both provided with hanging plates (12); the hanging plate (12) at the top is provided with hanging holes for connection with a main hook of a crane, and the hanging plate (12) at the bottom is hinged to a hydraulic rod (2) by means of a pin shaft.

6. The wind turbine nacelle hub assembly hoisting device with adjustable center of gravity according to claim 1, characterized in that: The two hydraulic rods (2) are located in the same plane.

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